Operation Ouch! - Season 4 - Eps 1: How Your Nerves Work
Dr Chris and Dr Xand reveal the surprising secret behind the speed of your nerves, Dr Xand finds out what happens if you don't wash your hands, and the twins head out onto the street to test out a mind-bending trick that reveals how you can make your favourite cake look bigger than it is. Meanwhile, the ouch-mobile is opening its doors for more medical mysteries, and in accident and emergency one patient has a sweet stuck up their nose and another has an ear that is swelling fast.
About Operation Ouch!

Title: Operation Ouch!
First Air Date: 2012-10-03
Last Air Date: 2023-07-12
Status: Returning Series
Rating: 6.2/10 (from 4 votes)
Language: EN
Seasons: 16
Total Episodes: 189
Network: CBBC
Genres: Reality, Kids, Family, Documentary
Production Companies: Maverick Television
Synopsis
Operation Ouch! is a British children's educational television series about the human body. It shows what happens in A&E, what doctors sometimes have problems with and great experiments. The show is hosted by twin brothers Dr Chris and Dr Xand van Tulleken. Series 5 was named "Operation Ouch! Hospital Takeover".
Cast

Xand van Tulleken
Himself - Presenter

Chris van Tulleken
Himself - Presenter